(3r)-9,10-dihydroxy-7-methoxy-3-methyl-3,4-dihydro-1h-benzo[g]isochromen-1-one 70477-26-8 CTK5D2478 CAS 70477-26-8

Purity 97%+In StockPharmaceutical Standards
CAS No.70477-26-8
Molecular FormulaC15H14O5
Molecular Weight274.27 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(3r)-9,10-dihydroxy-7-methoxy-3-methyl-3,4-dihydro-1h-benzo[g]isochromen-1-one 70477-26-8 CTK5D2478 CAS 70477-26-8 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

(3r)-9,10-dihydroxy-7-methoxy-3-methyl-3,4-dihydro-1h-benzo[g]isochromen-1-one 70477-26-8 CTK5D2478 (CAS 70477-26-8) is a high-purity analytical reference standard with the molecular formula C15H14O5 and a molecular weight of 274.27 g/mol.

The molecular framework of (3r)-9,10-dihydroxy-7-methoxy-3-methyl-3,4-dihydro-1h-benzo[g]isochromen-1-one 70477-26-8 CTK5D2478 (C15H14O5) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC15H14O5
Molecular Weight274.27 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1977

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